Double wall glass



FIG. 1 is a front perspective view of a double wall glass showing our new design;

FIG. 2 is a top plan view of the invention illustrated in FIG. 1;

FIG. 3 is a front elevation view of the invention illustrated in FIG. 1, a rear elevation view being the same as shown in this figure; and,

FIG. 4 is a bottom plan view of the invention illustrated in FIG. 1. 

The ornamental design for double wall glass, as shown and described. 